Question

When conducting sample variance using the Kruskal-Wallis test, the sample values are pooled together randomly. Select...

When conducting sample variance using the Kruskal-Wallis test, the sample values are pooled together randomly. Select one: a. FALSE b. NEITHER c. TRUE

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Correct answer: (C) TRUE

since

The Kruskal-Wallis test is a nonparametric (distribution free) test, and is used when the assumptions of one-way ANOVA are not met. Both the Kruskal-Wallis test and one-way ANOVA assess for significant differences on a continuous dependent variable by a categorical independent variable (with two or more groups). In the ANOVA, we assume that the dependent variable is normally distributed and there is approximately equal variance on the scores across groups. However, when using the Kruskal-Wallis Test, we do not have to make any of these assumptions. Therefore, the Kruskal-Wallis test can be used for both continuous and ordinal-level dependent variables. However, like most non-parametric tests, the Kruskal-Wallis Test is not as powerful as the ANOVA.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Discuss when it is appropriate to use the one-way ANOVA and the Kruskal-Wallis      test.
Discuss when it is appropriate to use the one-way ANOVA and the Kruskal-Wallis      test.
In the Kruskal-wallis test for the following data, what is the conclusion about the test at...
In the Kruskal-wallis test for the following data, what is the conclusion about the test at .05 significance level? Suppose that each sample include at least five observations. In addition, the hypotheses are as follows: H0 : µ1 = µ2 = µ3 H1: At least one of the population mean is different from others. Select one: A. Fail to reject H0: µ1 = µ2 = µ3. B. Reject H1: At least one of the population mean is different from others....
Movies 10a and b - Kruskal Wallis Using either R and/or SPSS, calculate a Kruskal Wallis...
Movies 10a and b - Kruskal Wallis Using either R and/or SPSS, calculate a Kruskal Wallis H test report in the correct format AND a complete write up (in a paragraph) following the example in the movie. (1 point).Be sure to cut and paste your output into this document. When using R this should include your code. IF using SPSS screenshot the output dialogs after double clicking on the summary (I have not been able to cut and paste those...
1. Assume you have two independent samples having the same sample size. If the variance for...
1. Assume you have two independent samples having the same sample size. If the variance for the first sample is 50 and the variance for the second sample is 40, then the pooled variance for these two samples is 45. True /False 2. An F test for the equality of two population variances can be a two-tailed test or a one-tailed test. True False 3. A Chi-Square test is often used to determine if there is a significant relationship between...
Four different paints are advertised to have the same drying times. Use the Kruskal Wallis Test...
Four different paints are advertised to have the same drying times. Use the Kruskal Wallis Test – Analysis of Variance by Ranks, to verify the manufacturer’s claim. Remember that seven samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded. Below are the results. Paint 1 Rank Paint 2 Rank Paint 3 Rank Paint 4 Rank 114 112 126 115 117 118 127...
Suppose you want to use the​ Kruskal-Wallis H-test to compare the probability distributions of three populations....
Suppose you want to use the​ Kruskal-Wallis H-test to compare the probability distributions of three populations. The following data represent independent random samples selected from the three populations. Use this data to complete parts a through d below. I           II           III 36         22         72 54         20         101 63         78         89 56         40         25 84         36         81 71         42         76 46         34         a. What type of experimental design was​ used? A. Paired Difference B. Completely Randomized. C. Randomized Block b. Specify...
Consider the following statements concerning confidence interval estimates: A. The use of the pooled variance estimator...
Consider the following statements concerning confidence interval estimates: A. The use of the pooled variance estimator when constructing a confidence interval for the difference between means requires the assumption that the population variances are equal. B. The width of a confidence interval estimate for the proportion, or for mean when the population standard deviation is known, is inversely proportional to the square root of the sample size. C. To determine the sample size required to achieve a desired precision in...
Which of the following statements is (are) true regarding the sales activity variance? (A) Sales activity...
Which of the following statements is (are) true regarding the sales activity variance? (A) Sales activity variance is the actual selling price per unit times the difference between the budgeted units and actual units. (B) If the sales activity variance for sales revenue is unfavorable, then the contribution margin sales activity variance will be unfavorable. Select one: a. Only A is true. b. Only B is true. c. Neither A and B is true. d. Both A and B are...
To obtain evidence on the completeness assertion for revenue, the auditor would select a sample of...
To obtain evidence on the completeness assertion for revenue, the auditor would select a sample of shipping documents and trace them to the sales journal True False When conducting analytical audit procedures including analytical account analysis the auditor is not looking for account relationships that do not appear logical but rather absolute changes in account values. True False
No explanation required; Question 1 A two-independent-sample t-test is computed when mean differences are compared between...
No explanation required; Question 1 A two-independent-sample t-test is computed when mean differences are compared between TWO OR MORE groups sampled from a population with an unknown variance. Select one: True False Q 2 Question 2 A counselor records the number of disagreements (per session) among couples during group counseling sessions. If the number of disagreements is distributed normally with a mean of 4.4 disagreements and a standard deviation of 0.4, then what proportion of couples disagree at least four...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT